Spring-hinge



(ModeL) A. SOHWEINFURT.

SPRING HINGE. No. 351,469. Patented Oct. 26, 1886.

6 e zvmior.

witnesses I 6/ MQMQMW W UNITED STATES PATENT OFFICE. 61

AUGUSTUS SOHWEINFURT, OF PHILADELPHIA, PENNSYLVANIA.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 351,469, dated October 26, 1886.

7 Application filed October 17, 1885. Serial No. 1 80207. (Model) To all whom it may concern-.-

curs, the spring loses its resiliency, and dur-' ing the movements of the hinge resulting from the opening and closing of the door to which it is attached the free ends of the spring frequently protrude beyond the knuckles, and

'are a cause of much annoyance by tearing the garments of a person passing.

To overcome this difliculty is the object of myinventiomas also to provide a means wherea by to dispense with the necessity of riveting 5 the pin to the knuckles of a completed hinge.

The invention consists, in the first place, in forming a stud or projection upon the plate or inner face of the inner knuckles in such a manner that the free ends of the spring shall rest and slide beneath the studs.

The invention further consists in forming a lug upon each flap of the hinge outside of the knuckles, which is bent at right angles to the plate after the pintle is in position, in such a manner that the inner edges of the lugs bear against the ends of the pintle, preventing its withdrawal, and obviating the necessity of riveting or forming heads upon the ends of the pintle, as will be more fully hereinafter described. v

In the accompanying drawings,which make a part of this specification, Figure 1 isa face view of a blank for forming a flap of a hinge. Fig. 2 is a' face view of a hinge. Fig. Sis an edge view of the same. Fig. 4 is a cross-section taken through the line x a; of Fig. 2 in the direction of the arrow. Fig. 5 is a face View of a flap of a hinge, showing the stud E formed on the plate. Fig. 6 represents a face view ofa blank for forming a flap, in which the knuckles B B are to be rolled around the ends of the pintle, showing the stud Eformed upon the edge of the knuckle. Fig. 7 is a die that forms the plate; or it may be formed in the plate, as represented in Fig. 1,0r a hole drilled in the knuckle, the stud inserted, and riveted thereto, as may suit convenience, sufficient room or space being provided to permit of the insertion of afree end, a, of the spring D between the lower edge of the stud E and plate of the flap, to retain the end a and allow the same to slide therein during the movements of the hinge in opening or closing a door.

' A modified form is shown in Figs. 7 and 8, in which a plate,'b is riveted to the flap of the hinge, with its edge 0 curved up, as seen in Fig. 8, to allow of the insertion of the free end of the spring.

While the spring remains intact, its resiliency causes the ends to rest or hug closely to the inner faces of the contiguous knuckles; but should the spring be broken, as frequently happens, consequent upon the great strain to which it is subjected, the studs E retain the ends in their normal position and prevent their protrudingand inflicting damage, as often occurs where these springs are in use upon doors of show-cases. NVhen the flaps of the hinge and knuckles are constructed of malleable or cast metal, the stud may form an integral part of the same.

- In Fig. l is shown a projection, d, that is 5 jected from the faces of the inner knuckles or knuckles 13, whereby said pintle is held in its 10 from the flaps, in combination with the resilconnected position with said flaps,substantia11y ient ends of the spring D, whereby said ends in the manner and forthe purposeherein shown arefretained in position bearing against the and described.

5 sur aces of the flaps, substantiall in the mani T r ner herein described, for the purp ose set forth. AUGUSTUS SCHWDIAFUR 2. In a spring-hinge, the flaps A, provided Witnesses:

with lugs d upon their ends, bent at right an- THOMAS J. BEWLEY, gles, in combination with the pintle G and SAML. B. S. EARTH. 

